What are the differences between mysql_field_seek and mysql_data_seek functions in PHP, and when should each be used?

The main difference between mysql_field_seek and mysql_data_seek functions in PHP is their purpose. mysql_field_seek is used to set the field cursor position to a specified field offset in a result set, while mysql_data_seek is used to set the row cursor position to a specified row offset in a result set. If you need to move the field cursor to a specific field in a result set, you should use mysql_field_seek. On the other hand, if you need to move the row cursor to a specific row in a result set, you should use mysql_data_seek.

// Using mysql_field_seek to set the field cursor position
mysql_field_seek($result, 2); // Move the field cursor to the third field in the result set

// Using mysql_data_seek to set the row cursor position
mysql_data_seek($result, 4); // Move the row cursor to the fifth row in the result set